John stephenson



(No Model.)

J. STEPHENSON.

TEAM OAR.

m 0 I 1 3 9 m 8 a 1 4| a 1 w W P a d 4V 6 v t m C t D a a A o P U 4 3?!W laz li/15 THE NORRIS PETERS C0, PHOI'QLIYHG, A 1 NFT N NITED STATESPATENT OFFICE.

JOHN STEPHENSON, OF NEW YORK, N. Y.

TRAM-CAR.

SPECIFICATION forming part of Letters Patent No. 491,608, dated February14, 1893. Application filed September 5, 1892. fierial No. 445,119. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, JOHN STEPHENSON, a citizen of the United States,residing in the city, county, and State of New York, have inventedcertain new and useful Improvements in Tram-Cars, of which the followingis a specification.

My invention relates to tram cars and consists in certain improvementshereinafter set forth and illustrated in the accompanying drawings, inwhich:-

Figure 1, is a transverse section of a tram car illustrating myimprovements. Fig. 2, is a plan view of the door sill plate. Fig. 3, isa vertical section through one of the door hangers and sheaves uponwhich the door is supported.

In tram cars employing sliding doors suspended from above an objectionis often found resulting from the end sill being forced down by theplatform and the weight of the passengers thereon, thereby disarrangingthe relationship of the door sill plate and causing the door to becomestuck or operate badly.

My invention is adapted to be used in con nection with tram car doors ofthe character described and claimed in myapplication Serial No. 370,776,filed November 8, 1890, although it is adapted to be used in connectionwith doors of other kinds. Such doors as are shown in the applicationare of more than usual weight and when open to their farthest extenttheir rear edges are at or near the joint of the end sill with the sidesill of the car. It therefore follows that if the door sill plate besupported and carried by the end sill alone and if the latter sill beforced downward away from the side sill, by reason of the load upon theplatform, the door will not be supported at its lower edge by theflanges of the door sill plate and that it is therefore liable to workunsatisfactorily.

My invention consists in improvements in the construction of the carwhereby the door sill plate is supported at its outer end upon the sidesill so that it is always held in proper relationship to the door, evenwhen the platform is heavily loaded and caused to sag thereby.

In the drawings A, designates the car door which is supported upon therails 2 and 3, by the sheaves 4t and 5. The door shown is represented ashaving a vertically sliding sash a, which when lowered moves between theouter and inner faces of the door. As the door A, may be of more thanordinary weight, particularly when constructed as above described, thecarrying sheaves are made strong and provided with improved means forlubricating their axles 6, which are made of large diameter and arecarried by the brackets 7. The axle 6, is hollow, as shown in Fig. 3,and is provided with a tube 8, communicating with the interior of theaxle and discharging at the exterior lower side thereof.

9, represents the end sill of the car and 10, 10, the side sillsthereof.

11, represents the door sill plate provided with flanges 12, betweenwhich the lower edge of the door runs and by which it is guided. Thedoor sill plate 11, may be of one or more parts, with the outer end ofthe plate resting on the side sill 10, and the plate 11-, otherwisesupported by the end sill to which it is secured and through which platebolts pass down through the plate and sill to carry the plat form. Thiscombination secures the end sill and its plate from being depressed bythe loaded platform,and preserves the proper relationship of those partswith the door.

What I claim is I 1. A tram car with its door bottom sliding betweenrising flanges on the door sill plate with its end resting on the sidesill of the car body, substantially as described.

2. A tram car with its door hung on sheaves, the axle of the sheavebeing hollow and provided with a tube communicating with the interior ofthe axle and discharging to the exterior of the lower side thereof,substantially as described.

3. A tram car with its door hung at or near its top by sheaves havingenlarged axles provided with oil chambers within the journals and tubesfor dripping the oil on the sheave axle journals, and the door bottomsliding be tween rising flanges of the door sill plate with its endresting on the side sill of the car body, the plate carrying theplatform bearer bolts which hold up the car platform with its load,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN STEPHENSON.

Vitnesses:

S. A. STEPHENSON, WM. J. WALKER.

